Olson Technology CAN - Manual (Page 7)

025-000570 Rev. X7 www.olsontech.com 7
RECEIVER DESCRIPTION
The OLAR L-Band Receiver can handle 10MHz to 4,000MHz RF signals. The receiver includes
a 25dB digital gain control. Optical input power ranges from -15 to +3dBm in the wavelength
range of 1270-1610nm. The receiver offers high sensitivity for a maximum optical link budget.
Built-in test points, LED indicators and alarms allow the receiver to be easily set up and
maintained.
Figure 3 - Front & Rear View of Receiver
RECEIVER CONTROLS OVERVIEW
Figure 3 shows the front and rear panels of the receiver.
On the front of the transmitter, the user can change the gain of the transmitter over a 25dB
range using S1 & S2. Higher gain allows the transmitter to be used with lower level RF sig-
nals and vice versa. S1 is a 16-position, hexadecimal, rotary switch. The “0” setting is mini-
mum gain and the “F” setting is the maximum gain. Each position is equal to a 1dB gain
change. So the gain of the “F” setting compared to the gain of the “0” setting will be 15dB
higher. The left switch of S2 is a high/low gain setting. When it is in the “Lo” position, the in-
cremental gain is 0dB. When it is “Hi” position, the gain increases by 10dB. To set the trans-
mitter for minimum gain, set S1 to “0” and the left switch of S2 up. To set the transmitter for
maximum gain, set S1 to “F” and the left switch of S2 down.
The right switch of S2 also allows the final RF amplifier to be switched on or off (Mute). When
the receiver output is Muted, the RF output level typically drops by 30dB. Note that the RF